#4422: kmod-26
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Reporter: bdubbs | Owner: lfs-book
Type: task | Status: new
Priority: normal | Milestone: 8.4
Component: Book | Version: SVN
Severity: normal | Keywords:
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New version.
- Improvements
- Add more error-checking in library functions and remove warnings on
newer
toolchains
- Depmod now handles parallel invoctions better by protecting the
temporary
files being used
- Improvements to testsuite and added tests to check the our behavior
regardless of the features enabled in the kernel, or libraries we
link to
- Teach the --show-exports option to modprobe. This works similarly to
--show-modversions, but it reports the exported symbols from that
module.
Under the hood this reads the .symtab and .strtab section rather than
__versions so it shows useful data even if kernel is configured
without
modversions (CONFIG_MODVERSIONS)
- Teach pkcs7 parsing to modinfo by using openssl. This allows modinfo
to
correctly parse the signature appended to a module by the kernel
build
system when configured with CONFIG_MODULE_SIG_ALL, or when externally
signed by the distro. Traditionally modules were signed and a struct
was appended together with the signature to the end of the module.
This has changed on the kernel for pkcs7 and now the structure isn't
filled out with useful information. So we have to parse the
signature
block in order to return useful data to the user.
If kmod is linked with openssl we parse the signature and return the
fields as we do for other signatures. An example of the relevant part
on the output of modinfo is below:
{{{
Before:
sig_id: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
After:
sig_id: PKCS#7
signer: Fedora kernel signing key
sig_key:
51:C4:0C:6D:7E:A5:6C:D8:8F:B4:3A:DF:91:78:4F:18:BC:D5:E4:C5
sig_hashalgo: sha256
}}}
If kmod is not linked to openssl we just start printing "unknonwn" in
the
sig_hashalgo field rather than the bogus value.
--
Ticket URL: <http://wiki.linuxfromscratch.org/lfs/ticket/4422>
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